When I download that page with either Chromium or Firefox, it downloads:
norocs.html box_pc_donna.jpg contents.css header_new.jpg
When I download that page with wget -p, it downloads:
index.html
index_files/box_pc_donna.jpg
index_files/header_new.jpg
images/rightBorder.gif
images/mps/cambiocarta.jpg
images/mps/btn_dx.gif
images/mps/btn_mid.gif
images/mps/btn_sx.gif
images/leftBorder.gif
So wget is actually downloading more content than the browser.

A quick comparison shows that the browser-downloaded files miss the
Login button (which is an image)
and the border + background below for «Catalogo Montepaschi Premia» and
«Regolamenti Montepaschi Club».